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Paul Mackerras14cf11a2005-09-26 16:04:21 +10001# For a description of the syntax of this configuration file,
2# see Documentation/kbuild/kconfig-language.txt.
3#
4
5mainmenu "Linux/PowerPC Kernel Configuration"
6
7config PPC64
8 bool "64-bit kernel"
9 default n
10 help
11 This option selects whether a 32-bit or a 64-bit kernel
12 will be built.
13
14config PPC32
15 bool
16 default y if !PPC64
17
18config 64BIT
19 bool
20 default y if PPC64
21
22config PPC_MERGE
23 def_bool y
24
25config MMU
26 bool
27 default y
28
Paul Mackerras14cf11a2005-09-26 16:04:21 +100029config GENERIC_HARDIRQS
30 bool
31 default y
32
Ingo Molnar0d7012a2006-06-29 02:24:43 -070033config IRQ_PER_CPU
34 bool
35 default y
36
Paul Mackerras14cf11a2005-09-26 16:04:21 +100037config RWSEM_GENERIC_SPINLOCK
38 bool
39
40config RWSEM_XCHGADD_ALGORITHM
41 bool
42 default y
43
Akinobu Mitae779b2f2006-03-26 01:39:33 -080044config GENERIC_HWEIGHT
45 bool
46 default y
47
Paul Mackerras14cf11a2005-09-26 16:04:21 +100048config GENERIC_CALIBRATE_DELAY
49 bool
50 default y
51
Jon Mason0a9cb462006-05-19 15:35:32 -050052config GENERIC_FIND_NEXT_BIT
53 bool
54 default y
55
Paul Mackerras14cf11a2005-09-26 16:04:21 +100056config PPC
57 bool
58 default y
59
60config EARLY_PRINTK
61 bool
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +110062 default y
Paul Mackerras14cf11a2005-09-26 16:04:21 +100063
64config COMPAT
65 bool
66 default y if PPC64
67
68config SYSVIPC_COMPAT
69 bool
70 depends on COMPAT && SYSVIPC
71 default y
72
73# All PPC32s use generic nvram driver through ppc_md
74config GENERIC_NVRAM
75 bool
76 default y if PPC32
77
78config SCHED_NO_NO_OMIT_FRAME_POINTER
79 bool
80 default y
81
82config ARCH_MAY_HAVE_PC_FDC
83 bool
84 default y
85
Kumar Gala08264cb2006-01-10 21:43:56 -060086config PPC_OF
87 def_bool y
88
89config PPC_UDBG_16550
90 bool
91 default n
92
Kumar Gala08264cb2006-01-10 21:43:56 -060093config GENERIC_TBSYNC
94 bool
95 default y if PPC32 && SMP
96 default n
97
Al Viroe65e1fc2006-09-12 03:04:40 -040098config AUDIT_ARCH
99 bool
100 default y
101
Kumar Galaf4fc4a52006-01-16 10:53:22 -0600102config DEFAULT_UIMAGE
103 bool
104 help
105 Used to allow a board to specify it wants a uImage built by default
106 default n
107
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000108menu "Processor support"
109choice
110 prompt "Processor Type"
111 depends on PPC32
112 default 6xx
113
Kumar Gala08264cb2006-01-10 21:43:56 -0600114config CLASSIC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000115 bool "6xx/7xx/74xx"
116 select PPC_FPU
Kumar Gala08264cb2006-01-10 21:43:56 -0600117 select 6xx
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000118 help
119 There are four families of PowerPC chips supported. The more common
120 types (601, 603, 604, 740, 750, 7400), the Motorola embedded
121 versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
122 embedded versions (403 and 405) and the high end 64 bit Power
123 processors (POWER 3, POWER4, and IBM PPC970 also known as G5).
124
125 Unless you are building a kernel for one of the embedded processor
126 systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx.
127 Note that the kernel runs in 32-bit mode even on 64-bit chips.
128
129config PPC_52xx
130 bool "Freescale 52xx"
Kumar Gala08264cb2006-01-10 21:43:56 -0600131 select 6xx
132 select PPC_FPU
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000133
134config PPC_82xx
135 bool "Freescale 82xx"
Kumar Gala08264cb2006-01-10 21:43:56 -0600136 select 6xx
137 select PPC_FPU
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000138
139config PPC_83xx
140 bool "Freescale 83xx"
Kumar Gala08264cb2006-01-10 21:43:56 -0600141 select 6xx
142 select FSL_SOC
143 select 83xx
144 select PPC_FPU
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000145
Becky Bruce63dafe52006-01-14 16:57:39 -0600146config PPC_85xx
147 bool "Freescale 85xx"
148 select E500
149 select FSL_SOC
150 select 85xx
151
Jon Loeligerc9b484b2006-06-17 17:52:35 -0500152config PPC_86xx
153 bool "Freescale 86xx"
154 select 6xx
155 select FSL_SOC
156 select PPC_FPU
157 select ALTIVEC
158 help
159 The Freescale E600 SoCs have 74xx cores.
160
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000161config 40x
162 bool "AMCC 40x"
163
164config 44x
165 bool "AMCC 44x"
166
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000167config 8xx
168 bool "Freescale 8xx"
169
170config E200
171 bool "Freescale e200"
172
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000173endchoice
174
175config POWER4_ONLY
176 bool "Optimize for POWER4"
Paul Mackerras187a0062005-10-06 12:49:05 +1000177 depends on PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000178 default n
179 ---help---
180 Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
181 The resulting binary will not work on POWER3 or RS64 processors
182 when compiled with binutils 2.15 or later.
183
184config POWER3
185 bool
Paul Mackerras187a0062005-10-06 12:49:05 +1000186 depends on PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000187 default y if !POWER4_ONLY
188
189config POWER4
Paul Mackerras187a0062005-10-06 12:49:05 +1000190 depends on PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000191 def_bool y
192
Kumar Gala08264cb2006-01-10 21:43:56 -0600193config 6xx
194 bool
195
196# this is temp to handle compat with arch=ppc
197config 83xx
198 bool
199
Becky Bruce63dafe52006-01-14 16:57:39 -0600200# this is temp to handle compat with arch=ppc
201config 85xx
202 bool
203
204config E500
205 bool
206
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000207config PPC_FPU
Paul Mackerras187a0062005-10-06 12:49:05 +1000208 bool
209 default y if PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000210
211config BOOKE
212 bool
213 depends on E200 || E500
214 default y
215
216config FSL_BOOKE
217 bool
218 depends on E200 || E500
219 default y
220
221config PTE_64BIT
222 bool
223 depends on 44x || E500
224 default y if 44x
225 default y if E500 && PHYS_64BIT
226
227config PHYS_64BIT
228 bool 'Large physical address support' if E500
229 depends on 44x || E500
230 default y if 44x
231 ---help---
232 This option enables kernel support for larger than 32-bit physical
233 addresses. This features is not be available on all e500 cores.
234
235 If in doubt, say N here.
236
237config ALTIVEC
238 bool "AltiVec Support"
Kumar Gala08264cb2006-01-10 21:43:56 -0600239 depends on CLASSIC32 || POWER4
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000240 ---help---
241 This option enables kernel support for the Altivec extensions to the
242 PowerPC processor. The kernel currently supports saving and restoring
243 altivec registers, and turning on the 'altivec enable' bit so user
244 processes can execute altivec instructions.
245
246 This option is only usefully if you have a processor that supports
247 altivec (G4, otherwise known as 74xx series), but does not have
248 any affect on a non-altivec cpu (it does, however add code to the
249 kernel).
250
251 If in doubt, say Y here.
252
253config SPE
254 bool "SPE Support"
255 depends on E200 || E500
Becky Bruce63dafe52006-01-14 16:57:39 -0600256 default y
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000257 ---help---
258 This option enables kernel support for the Signal Processing
259 Extensions (SPE) to the PowerPC processor. The kernel currently
260 supports saving and restoring SPE registers, and turning on the
261 'spe enable' bit so user processes can execute SPE instructions.
262
263 This option is only useful if you have a processor that supports
264 SPE (e500, otherwise known as 85xx series), but does not have any
265 effect on a non-spe cpu (it does, however add code to the kernel).
266
267 If in doubt, say Y here.
268
269config PPC_STD_MMU
270 bool
271 depends on 6xx || POWER3 || POWER4 || PPC64
272 default y
273
274config PPC_STD_MMU_32
275 def_bool y
276 depends on PPC_STD_MMU && PPC32
277
Paul Mackerrasc6622f62006-02-24 10:06:59 +1100278config VIRT_CPU_ACCOUNTING
279 bool "Deterministic task and CPU time accounting"
280 depends on PPC64
281 default y
282 help
283 Select this option to enable more accurate task and CPU time
284 accounting. This is done by reading a CPU counter on each
285 kernel entry and exit and on transitions within the kernel
286 between system, softirq and hardirq state, so there is a
287 small performance impact. This also enables accounting of
288 stolen time on logically-partitioned systems running on
289 IBM POWER5-based machines.
290
291 If in doubt, say Y here.
292
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000293config SMP
294 depends on PPC_STD_MMU
295 bool "Symmetric multi-processing support"
296 ---help---
297 This enables support for systems with more than one CPU. If you have
298 a system with only one CPU, say N. If you have a system with more
299 than one CPU, say Y. Note that the kernel does not currently
300 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
301 since they have inadequate hardware support for multiprocessor
302 operation.
303
304 If you say N here, the kernel will run on single and multiprocessor
305 machines, but will use only one CPU of a multiprocessor machine. If
306 you say Y here, the kernel will run on single-processor machines.
307 On a single-processor machine, the kernel will run faster if you say
308 N here.
309
310 If you don't know what to do here, say N.
311
312config NR_CPUS
Olaf Heringe8a167a2005-12-01 21:10:10 +0100313 int "Maximum number of CPUs (2-128)"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000314 range 2 128
315 depends on SMP
316 default "32" if PPC64
317 default "4"
318
319config NOT_COHERENT_CACHE
320 bool
321 depends on 4xx || 8xx || E200
322 default y
323endmenu
324
325source "init/Kconfig"
326
327menu "Platform support"
Kumar Gala08264cb2006-01-10 21:43:56 -0600328 depends on PPC64 || CLASSIC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000329
330choice
331 prompt "Machine type"
332 default PPC_MULTIPLATFORM
333
334config PPC_MULTIPLATFORM
335 bool "Generic desktop/server/laptop"
336 help
337 Select this option if configuring for an IBM pSeries or
338 RS/6000 machine, an Apple machine, or a PReP, CHRP,
339 Maple or Cell-based machine.
340
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000341config EMBEDDED6xx
342 bool "Embedded 6xx/7xx/7xxx-based board"
Zang Roy-r61911c5d56332006-06-13 15:07:15 +0800343 depends on PPC32 && (BROKEN||BROKEN_ON_SMP)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000344
345config APUS
346 bool "Amiga-APUS"
347 depends on PPC32 && BROKEN
348 help
349 Select APUS if configuring for a PowerUP Amiga.
350 More information is available at:
351 <http://linux-apus.sourceforge.net/>.
352endchoice
353
Li Yang98658532006-10-03 23:10:46 -0500354config QUICC_ENGINE
355 bool
356 depends on PPC_MPC836x || PPC_MPC832x
357 default y
358 help
359 The QUICC Engine (QE) is a new generation of communications
360 coprocessors on Freescale embedded CPUs (akin to CPM in older chips).
361 Selecting this option means that you wish to build a kernel
362 for a machine with a QE coprocessor.
363
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000364config PPC_PSERIES
365 depends on PPC_MULTIPLATFORM && PPC64
Andrew Morton4a3ecc62006-06-01 20:36:04 -0700366 bool "IBM pSeries & new (POWER5-based) iSeries"
Zang Roy-r6191172335932006-08-25 14:16:30 +1000367 select MPIC
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000368 select PPC_I8259
Paul Mackerras033ef332005-10-26 17:05:24 +1000369 select PPC_RTAS
370 select RTAS_ERROR_LOGGING
Paul Mackerras13b8a272006-01-10 16:19:05 +1100371 select PPC_UDBG_16550
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000372 default y
373
Stephen Rothwella542dbd2006-09-25 13:49:58 +1000374config PPC_ISERIES
375 bool "IBM Legacy iSeries"
376 depends on PPC_MULTIPLATFORM && PPC64
377
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000378config PPC_CHRP
Andrew Morton4a3ecc62006-06-01 20:36:04 -0700379 bool "Common Hardware Reference Platform (CHRP) based machines"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000380 depends on PPC_MULTIPLATFORM && PPC32
Zang Roy-r6191172335932006-08-25 14:16:30 +1000381 select MPIC
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000382 select PPC_I8259
Paul Mackerras25635c72005-10-26 16:36:55 +1000383 select PPC_INDIRECT_PCI
Paul Mackerras033ef332005-10-26 17:05:24 +1000384 select PPC_RTAS
Paul Mackerras830825d2005-10-26 17:16:38 +1000385 select PPC_MPC106
Paul Mackerras13b8a272006-01-10 16:19:05 +1100386 select PPC_UDBG_16550
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000387 default y
388
389config PPC_PMAC
Andrew Morton4a3ecc62006-06-01 20:36:04 -0700390 bool "Apple PowerMac based machines"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000391 depends on PPC_MULTIPLATFORM
Zang Roy-r6191172335932006-08-25 14:16:30 +1000392 select MPIC
Paul Mackerras25635c72005-10-26 16:36:55 +1000393 select PPC_INDIRECT_PCI if PPC32
Paul Mackerrasb6a4ce52005-10-26 22:54:17 +1000394 select PPC_MPC106 if PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000395 default y
396
397config PPC_PMAC64
398 bool
399 depends on PPC_PMAC && POWER4
Zang Roy-r6191172335932006-08-25 14:16:30 +1000400 select MPIC
Paul Mackerras35499c02005-10-22 16:02:39 +1000401 select U3_DART
Benjamin Herrenschmidt1beb6a72005-12-14 13:10:10 +1100402 select MPIC_BROKEN_U3
Paul Mackerras8ad200d2005-11-04 13:28:58 +1100403 select GENERIC_TBSYNC
Paul Mackerrasf39224a2006-04-18 21:49:11 +1000404 select PPC_970_NAP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000405 default y
406
407config PPC_PREP
Andrew Morton4a3ecc62006-06-01 20:36:04 -0700408 bool "PowerPC Reference Platform (PReP) based machines"
Paul Mackerras5be396b2005-11-14 17:31:55 +1100409 depends on PPC_MULTIPLATFORM && PPC32 && BROKEN
Zang Roy-r6191172335932006-08-25 14:16:30 +1000410 select MPIC
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000411 select PPC_I8259
Paul Mackerras25635c72005-10-26 16:36:55 +1000412 select PPC_INDIRECT_PCI
Paul Mackerras13b8a272006-01-10 16:19:05 +1100413 select PPC_UDBG_16550
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000414 default y
415
416config PPC_MAPLE
417 depends on PPC_MULTIPLATFORM && PPC64
Andrew Morton4a3ecc62006-06-01 20:36:04 -0700418 bool "Maple 970FX Evaluation Board"
Zang Roy-r6191172335932006-08-25 14:16:30 +1000419 select MPIC
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000420 select U3_DART
421 select MPIC_BROKEN_U3
Paul Mackerras8ad200d2005-11-04 13:28:58 +1100422 select GENERIC_TBSYNC
Paul Mackerras13b8a272006-01-10 16:19:05 +1100423 select PPC_UDBG_16550
Paul Mackerrasf39224a2006-04-18 21:49:11 +1000424 select PPC_970_NAP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000425 default n
426 help
427 This option enables support for the Maple 970FX Evaluation Board.
428 For more informations, refer to <http://www.970eval.com>
429
Olof Johansson1e768752006-09-06 14:42:08 -0500430config PPC_PASEMI
431 depends on PPC_MULTIPLATFORM && PPC64
432 bool "PA Semi SoC-based platforms"
433 default n
434 select MPIC
435 select PPC_UDBG_16550
436 select GENERIC_TBSYNC
437 help
438 This option enables support for PA Semi's PWRficient line
439 of SoC processors, including PA6T-1682M
440
Arnd Bergmannf3f66f52005-10-31 20:08:37 -0500441config PPC_CELL
Geoff Levandc01ea722006-06-19 20:33:28 +0200442 bool
443 default n
444
445config PPC_CELL_NATIVE
446 bool
447 select PPC_CELL
448 default n
449
450config PPC_IBM_CELL_BLADE
Andrew Mortonf127a2b2006-06-25 01:49:07 -0700451 bool "IBM Cell Blade"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000452 depends on PPC_MULTIPLATFORM && PPC64
Geoff Levandc01ea722006-06-19 20:33:28 +0200453 select PPC_CELL_NATIVE
Paul Mackerras033ef332005-10-26 17:05:24 +1000454 select PPC_RTAS
Arnd Bergmannedf03c12005-10-31 20:08:40 -0500455 select MMIO_NVRAM
Paul Mackerras13b8a272006-01-10 16:19:05 +1100456 select PPC_UDBG_16550
Michael Ellerman94b60ec2006-06-23 18:20:22 +1000457 select UDBG_RTAS_CONSOLE
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000458
Michael Ellermancc46bb92006-06-23 18:20:16 +1000459config UDBG_RTAS_CONSOLE
Michael Neuling9a2ded52006-08-16 23:12:14 -0500460 bool "RTAS based debug console"
461 depends on PPC_RTAS
Michael Ellermancc46bb92006-06-23 18:20:16 +1000462 default n
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000463
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000464config XICS
465 depends on PPC_PSERIES
466 bool
467 default y
468
469config U3_DART
470 bool
471 depends on PPC_MULTIPLATFORM && PPC64
472 default n
473
Paul Mackerras033ef332005-10-26 17:05:24 +1000474config PPC_RTAS
475 bool
476 default n
477
478config RTAS_ERROR_LOGGING
479 bool
480 depends on PPC_RTAS
481 default n
482
Paul Mackerrasf4fcbbe2005-11-03 14:41:19 +1100483config RTAS_PROC
484 bool "Proc interface to RTAS"
Arnd Bergmanne9add2e2005-10-31 20:08:39 -0500485 depends on PPC_RTAS
Paul Mackerrasf4fcbbe2005-11-03 14:41:19 +1100486 default y
487
488config RTAS_FLASH
489 tristate "Firmware flash interface"
490 depends on PPC64 && RTAS_PROC
Arnd Bergmanne9add2e2005-10-31 20:08:39 -0500491
Arnd Bergmannedf03c12005-10-31 20:08:40 -0500492config MMIO_NVRAM
493 bool
494 default n
495
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000496config MPIC_BROKEN_U3
497 bool
498 depends on PPC_MAPLE
499 default y
500
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000501config IBMVIO
502 depends on PPC_PSERIES || PPC_ISERIES
503 bool
504 default y
505
Heiko J Schickd7a30102005-11-16 08:56:43 +0100506config IBMEBUS
507 depends on PPC_PSERIES
508 bool "Support for GX bus based adapters"
Heiko J Schickd7a30102005-11-16 08:56:43 +0100509 help
510 Bus device driver for GX bus based adapters.
511
Paul Mackerras830825d2005-10-26 17:16:38 +1000512config PPC_MPC106
513 bool
514 default n
515
Paul Mackerrasf39224a2006-04-18 21:49:11 +1000516config PPC_970_NAP
517 bool
518 default n
519
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000520source "drivers/cpufreq/Kconfig"
521
522config CPU_FREQ_PMAC
523 bool "Support for Apple PowerBooks"
524 depends on CPU_FREQ && ADB_PMU && PPC32
525 select CPU_FREQ_TABLE
526 help
527 This adds support for frequency switching on Apple PowerBooks,
528 this currently includes some models of iBook & Titanium
529 PowerBook.
530
Benjamin Herrenschmidt43501472005-11-07 14:27:33 +1100531config CPU_FREQ_PMAC64
532 bool "Support for some Apple G5s"
Benjamin Herrenschmidt7ed14c22006-07-06 15:09:19 +1000533 depends on CPU_FREQ && PPC64
Benjamin Herrenschmidt43501472005-11-07 14:27:33 +1100534 select CPU_FREQ_TABLE
535 help
536 This adds support for frequency switching on Apple iMac G5,
537 and some of the more recent desktop G5 machines as well.
538
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000539config PPC601_SYNC_FIX
540 bool "Workarounds for PPC601 bugs"
541 depends on 6xx && (PPC_PREP || PPC_PMAC)
542 help
543 Some versions of the PPC601 (the first PowerPC chip) have bugs which
544 mean that extra synchronization instructions are required near
545 certain instructions, typically those that make major changes to the
546 CPU state. These extra instructions reduce performance slightly.
547 If you say N here, these extra instructions will not be included,
548 resulting in a kernel which will run faster but may not run at all
549 on some systems with the PPC601 chip.
550
551 If in doubt, say Y here.
552
553config TAU
Paul Mackerras9b781722006-03-27 19:15:26 +1100554 bool "On-chip CPU temperature sensor support"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000555 depends on 6xx
556 help
557 G3 and G4 processors have an on-chip temperature sensor called the
558 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
559 temperature within 2-4 degrees Celsius. This option shows the current
560 on-die temperature in /proc/cpuinfo if the cpu supports it.
561
562 Unfortunately, on some chip revisions, this sensor is very inaccurate
Paul Mackerras9b781722006-03-27 19:15:26 +1100563 and in many cases, does not work at all, so don't assume the cpu
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000564 temp is actually what /proc/cpuinfo says it is.
565
566config TAU_INT
567 bool "Interrupt driven TAU driver (DANGEROUS)"
568 depends on TAU
569 ---help---
570 The TAU supports an interrupt driven mode which causes an interrupt
571 whenever the temperature goes out of range. This is the fastest way
572 to get notified the temp has exceeded a range. With this option off,
573 a timer is used to re-check the temperature periodically.
574
575 However, on some cpus it appears that the TAU interrupt hardware
576 is buggy and can cause a situation which would lead unexplained hard
577 lockups.
578
579 Unless you are extending the TAU driver, or enjoy kernel/hardware
580 debugging, leave this option off.
581
582config TAU_AVERAGE
583 bool "Average high and low temp"
584 depends on TAU
585 ---help---
586 The TAU hardware can compare the temperature to an upper and lower
587 bound. The default behavior is to show both the upper and lower
588 bound in /proc/cpuinfo. If the range is large, the temperature is
589 either changing a lot, or the TAU hardware is broken (likely on some
590 G4's). If the range is small (around 4 degrees), the temperature is
591 relatively stable. If you say Y here, a single temperature value,
592 halfway between the upper and lower bounds, will be reported in
593 /proc/cpuinfo.
594
595 If in doubt, say N here.
Mark A. Greerc2201532006-06-28 14:13:20 -0700596
597config PPC_TODC
598 depends on EMBEDDED6xx
599 bool "Generic Time-of-day Clock (TODC) support"
600 ---help---
601 This adds support for many TODC/RTC chips.
602
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000603endmenu
604
605source arch/powerpc/platforms/embedded6xx/Kconfig
606source arch/powerpc/platforms/4xx/Kconfig
Vitaly Borduged943c12006-10-02 22:41:50 +0400607source arch/powerpc/platforms/82xx/Kconfig
Kumar Gala08264cb2006-01-10 21:43:56 -0600608source arch/powerpc/platforms/83xx/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000609source arch/powerpc/platforms/85xx/Kconfig
Jon Loeligerc9b484b2006-06-17 17:52:35 -0500610source arch/powerpc/platforms/86xx/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000611source arch/powerpc/platforms/8xx/Kconfig
Arnd Bergmann67207b92005-11-15 15:53:48 -0500612source arch/powerpc/platforms/cell/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000613
614menu "Kernel options"
615
616config HIGHMEM
617 bool "High memory support"
618 depends on PPC32
619
620source kernel/Kconfig.hz
621source kernel/Kconfig.preempt
622source "fs/Kconfig.binfmt"
623
624# We optimistically allocate largepages from the VM, so make the limit
625# large enough (16MB). This badly named config option is actually
626# max order + 1
627config FORCE_MAX_ZONEORDER
628 int
629 depends on PPC64
Mike Kravetz02864862005-11-07 13:48:59 -0800630 default "9" if PPC_64K_PAGES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000631 default "13"
632
633config MATH_EMULATION
634 bool "Math emulation"
635 depends on 4xx || 8xx || E200 || E500
636 ---help---
637 Some PowerPC chips designed for embedded applications do not have
638 a floating-point unit and therefore do not implement the
639 floating-point instructions in the PowerPC instruction set. If you
640 say Y here, the kernel will include code to emulate a floating-point
641 unit, which will allow programs that use floating-point
642 instructions to run.
643
644config IOMMU_VMERGE
645 bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
646 depends on EXPERIMENTAL && PPC64
647 default n
648 help
649 Cause IO segments sent to a device for DMA to be merged virtually
650 by the IOMMU when they happen to have been allocated contiguously.
651 This doesn't add pressure to the IOMMU allocator. However, some
652 drivers don't support getting large merged segments coming back
653 from *_map_sg(). Say Y if you know the drivers you are using are
654 properly handling this case.
655
656config HOTPLUG_CPU
657 bool "Support for enabling/disabling CPUs"
658 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
659 ---help---
660 Say Y here to be able to disable and re-enable individual
661 CPUs at runtime on SMP machines.
662
663 Say N if you are unsure.
664
Yasunori Gotocc576372006-06-29 02:24:27 -0700665config ARCH_ENABLE_MEMORY_HOTPLUG
666 def_bool y
667
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000668config KEXEC
669 bool "kexec system call (EXPERIMENTAL)"
670 depends on PPC_MULTIPLATFORM && EXPERIMENTAL
671 help
672 kexec is a system call that implements the ability to shutdown your
673 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400674 but it is independent of the system firmware. And like a reboot
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000675 you can start any kernel with it, not just Linux.
676
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400677 The name comes from the similarity to the exec system call.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000678
679 It is an ongoing process to be certain the hardware in a machine
680 is properly shutdown, so do not be surprised if this code does not
681 initially work for you. It may help to enable device hotplugging
682 support. As of this writing the exact hardware interface is
683 strongly in flux, so no good recommendation can be made.
684
Haren Mynenie8625d462006-01-14 13:48:25 -0800685config CRASH_DUMP
Michael Ellermancd9c99d2006-03-10 15:01:08 +1100686 bool "Build a kdump crash kernel (EXPERIMENTAL)"
Haren Mynenie8625d462006-01-14 13:48:25 -0800687 depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL
688 help
689 Build a kernel suitable for use as a kdump capture kernel.
690 The kernel will be linked at a different address than normal, and
691 so can only be used for Kdump.
692
693 Don't change this unless you know what you are doing.
694
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000695config EMBEDDEDBOOT
696 bool
697 depends on 8xx || 8260
698 default y
699
700config PC_KEYBOARD
701 bool "PC PS/2 style Keyboard"
702 depends on 4xx || CPM2
703
704config PPCBUG_NVRAM
705 bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
706 default y if PPC_PREP
707
708config IRQ_ALL_CPUS
709 bool "Distribute interrupts on all CPUs by default"
710 depends on SMP && !MV64360
711 help
712 This option gives the kernel permission to distribute IRQs across
713 multiple CPUs. Saying N here will route all IRQs to the first
714 CPU. Generally saying Y is safe, although some problems have been
715 reported with SMP Power Macintoshes with this option enabled.
716
717source "arch/powerpc/platforms/pseries/Kconfig"
718
Andy Whitcroftffa27b62005-10-28 17:46:58 -0700719config NUMA
720 bool "NUMA support"
721 depends on PPC64
722 default y if SMP && PPC_PSERIES
723
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700724config NODES_SHIFT
725 int
726 default "4"
727 depends on NEED_MULTIPLE_NODES
728
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000729config ARCH_SELECT_MEMORY_MODEL
730 def_bool y
731 depends on PPC64
732
733config ARCH_FLATMEM_ENABLE
Andy Whitcroft9100b202005-11-29 19:20:55 +0000734 def_bool y
735 depends on (PPC64 && !NUMA) || PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000736
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000737config ARCH_SPARSEMEM_ENABLE
738 def_bool y
Andy Whitcroft9100b202005-11-29 19:20:55 +0000739 depends on PPC64
Anton Blanchard45fb6ce2005-11-11 14:22:35 +1100740
741config ARCH_SPARSEMEM_DEFAULT
742 def_bool y
743 depends on SMP && PPC_PSERIES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000744
Mel Gormanc67c3cb2006-09-27 01:49:49 -0700745config ARCH_POPULATES_NODE_MAP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000746 def_bool y
Mel Gormanc67c3cb2006-09-27 01:49:49 -0700747
748source "mm/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000749
Mike Kravetz7e9191d2005-11-07 09:39:48 -0800750config ARCH_MEMORY_PROBE
751 def_bool y
752 depends on MEMORY_HOTPLUG
753
Andy Whitcroft75167952006-10-21 10:24:14 -0700754# Some NUMA nodes have memory ranges that span
755# other nodes. Even though a pfn is valid and
756# between a node's start and end pfns, it may not
757# reside on that node. See memmap_init_zone()
758# for details.
759config NODES_SPAN_OTHER_NODES
760 def_bool y
761 depends on NEED_MULTIPLE_NODES
762
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100763config PPC_64K_PAGES
764 bool "64k page size"
Benjamin Herrenschmidt863c84b2005-11-07 00:57:58 -0800765 depends on PPC64
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100766 help
767 This option changes the kernel logical page size to 64k. On machines
768 without processor support for 64k pages, the kernel will simulate
769 them by loading each individual 4k page on demand transparently,
770 while on hardware with such support, it will be used to map
771 normal application pages.
772
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000773config SCHED_SMT
774 bool "SMT (Hyperthreading) scheduler support"
775 depends on PPC64 && SMP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000776 help
777 SMT scheduler support improves the CPU scheduler's decision making
778 when dealing with POWER5 cpus at a cost of slightly increased
779 overhead in some places. If unsure say N here.
780
781config PROC_DEVICETREE
Paul Mackerras5f296752005-10-17 20:14:59 +1000782 bool "Support for device tree in /proc"
783 depends on PROC_FS
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000784 help
785 This option adds a device-tree directory under /proc which contains
786 an image of the device tree that the kernel copies from Open
Paul Mackerras5f296752005-10-17 20:14:59 +1000787 Firmware or other boot firmware. If unsure, say Y here.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000788
789source "arch/powerpc/platforms/prep/Kconfig"
790
791config CMDLINE_BOOL
792 bool "Default bootloader kernel arguments"
793 depends on !PPC_ISERIES
794
795config CMDLINE
796 string "Initial kernel command string"
797 depends on CMDLINE_BOOL
798 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
799 help
800 On some platforms, there is currently no way for the boot loader to
801 pass arguments to the kernel. For these platforms, you can supply
802 some command-line options at build time by entering them here. In
803 most cases you will need to specify the root device here.
804
805if !44x || BROKEN
806source kernel/power/Kconfig
807endif
808
809config SECCOMP
810 bool "Enable seccomp to safely compute untrusted bytecode"
811 depends on PROC_FS
812 default y
813 help
814 This kernel feature is useful for number crunching applications
815 that may need to compute untrusted bytecode during their
816 execution. By using pipes or other transports made available to
817 the process as file descriptors supporting the read/write
818 syscalls, it's possible to isolate those applications in
819 their own address space using seccomp. Once seccomp is
820 enabled via /proc/<pid>/seccomp, it cannot be disabled
821 and the task is only allowed to execute a few safe syscalls
822 defined by each seccomp mode.
823
824 If unsure, say Y. Only embedded should say N here.
825
826endmenu
827
828config ISA_DMA_API
829 bool
830 default y
831
832menu "Bus options"
833
834config ISA
835 bool "Support for ISA-bus hardware"
836 depends on PPC_PREP || PPC_CHRP
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000837 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000838 help
839 Find out whether you have ISA slots on your motherboard. ISA is the
840 name of a bus system, i.e. the way the CPU talks to the other stuff
841 inside your box. If you have an Apple machine, say N here; if you
842 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
843 you have an embedded board, consult your board documentation.
844
845config GENERIC_ISA_DMA
846 bool
847 depends on PPC64 || POWER4 || 6xx && !CPM2
848 default y
849
Zang Roy-r6191172335932006-08-25 14:16:30 +1000850config MPIC
851 bool
852 default n
853
854config MPIC_WEIRD
855 bool
856 default n
857
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000858config PPC_I8259
859 bool
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000860 default n
861
Paul Mackerras25635c72005-10-26 16:36:55 +1000862config PPC_INDIRECT_PCI
863 bool
864 depends on PCI
Becky Bruce63dafe52006-01-14 16:57:39 -0600865 default y if 40x || 44x
Paul Mackerras25635c72005-10-26 16:36:55 +1000866 default n
867
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000868config EISA
869 bool
870
871config SBUS
872 bool
873
Kumar Gala08264cb2006-01-10 21:43:56 -0600874config FSL_SOC
875 bool
876
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000877# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
878config MCA
879 bool
880
881config PCI
Jon Loeliger53158622006-08-09 10:37:28 -0500882 bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \
883 || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES) || MPC7448HPC2
884 default y if !40x && !CPM2 && !8xx && !APUS && !PPC_83xx \
885 && !PPC_85xx && !PPC_86xx
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000886 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
887 default PCI_QSPAN if !4xx && !CPM2 && 8xx
888 help
889 Find out whether your system includes a PCI bus. PCI is the name of
890 a bus system, i.e. the way the CPU talks to the other stuff inside
891 your box. If you say Y here, the kernel will include drivers and
892 infrastructure code to support PCI bus devices.
893
894config PCI_DOMAINS
895 bool
896 default PCI
897
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000898config PCI_QSPAN
899 bool "QSpan PCI"
900 depends on !4xx && !CPM2 && 8xx
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000901 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000902 help
903 Say Y here if you have a system based on a Motorola 8xx-series
904 embedded processor with a QSPAN PCI interface, otherwise say N.
905
906config PCI_8260
907 bool
908 depends on PCI && 8260
Paul Mackerras25635c72005-10-26 16:36:55 +1000909 select PPC_INDIRECT_PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000910 default y
911
912config 8260_PCI9
Andrew Morton4a3ecc62006-06-01 20:36:04 -0700913 bool "Enable workaround for MPC826x erratum PCI 9"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000914 depends on PCI_8260 && !ADS8272
915 default y
916
917choice
Andrew Morton4a3ecc62006-06-01 20:36:04 -0700918 prompt "IDMA channel for PCI 9 workaround"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000919 depends on 8260_PCI9
920
921config 8260_PCI9_IDMA1
922 bool "IDMA1"
923
924config 8260_PCI9_IDMA2
925 bool "IDMA2"
926
927config 8260_PCI9_IDMA3
928 bool "IDMA3"
929
930config 8260_PCI9_IDMA4
931 bool "IDMA4"
932
933endchoice
934
Jake Moilanenbb53bb32006-06-07 16:05:46 -0500935source "drivers/pci/pcie/Kconfig"
936
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000937source "drivers/pci/Kconfig"
938
939source "drivers/pcmcia/Kconfig"
940
941source "drivers/pci/hotplug/Kconfig"
942
943endmenu
944
945menu "Advanced setup"
946 depends on PPC32
947
948config ADVANCED_OPTIONS
949 bool "Prompt for advanced kernel configuration options"
950 help
951 This option will enable prompting for a variety of advanced kernel
952 configuration options. These options can cause the kernel to not
953 work if they are set incorrectly, but can be used to optimize certain
954 aspects of kernel memory management.
955
956 Unless you know what you are doing, say N here.
957
958comment "Default settings for advanced configuration options are used"
959 depends on !ADVANCED_OPTIONS
960
961config HIGHMEM_START_BOOL
962 bool "Set high memory pool address"
963 depends on ADVANCED_OPTIONS && HIGHMEM
964 help
965 This option allows you to set the base address of the kernel virtual
966 area used to map high memory pages. This can be useful in
967 optimizing the layout of kernel virtual memory.
968
969 Say N here unless you know what you are doing.
970
971config HIGHMEM_START
972 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
973 default "0xfe000000"
974
975config LOWMEM_SIZE_BOOL
976 bool "Set maximum low memory"
977 depends on ADVANCED_OPTIONS
978 help
979 This option allows you to set the maximum amount of memory which
980 will be used as "low memory", that is, memory which the kernel can
981 access directly, without having to set up a kernel virtual mapping.
982 This can be useful in optimizing the layout of kernel virtual
983 memory.
984
985 Say N here unless you know what you are doing.
986
987config LOWMEM_SIZE
988 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
989 default "0x30000000"
990
991config KERNEL_START_BOOL
992 bool "Set custom kernel base address"
993 depends on ADVANCED_OPTIONS
994 help
995 This option allows you to set the kernel virtual address at which
996 the kernel will map low memory (the kernel image will be linked at
997 this address). This can be useful in optimizing the virtual memory
998 layout of the system.
999
1000 Say N here unless you know what you are doing.
1001
1002config KERNEL_START
1003 hex "Virtual address of kernel base" if KERNEL_START_BOOL
1004 default "0xc0000000"
1005
1006config TASK_SIZE_BOOL
1007 bool "Set custom user task size"
1008 depends on ADVANCED_OPTIONS
1009 help
1010 This option allows you to set the amount of virtual address space
1011 allocated to user tasks. This can be useful in optimizing the
1012 virtual memory layout of the system.
1013
1014 Say N here unless you know what you are doing.
1015
1016config TASK_SIZE
1017 hex "Size of user task space" if TASK_SIZE_BOOL
1018 default "0x80000000"
1019
1020config CONSISTENT_START_BOOL
1021 bool "Set custom consistent memory pool address"
1022 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1023 help
1024 This option allows you to set the base virtual address
Matt LaPlante4b3f6862006-10-03 22:21:02 +02001025 of the consistent memory pool. This pool of virtual
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001026 memory is used to make consistent memory allocations.
1027
1028config CONSISTENT_START
1029 hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
1030 default "0xff100000" if NOT_COHERENT_CACHE
1031
1032config CONSISTENT_SIZE_BOOL
1033 bool "Set custom consistent memory pool size"
1034 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1035 help
Matt LaPlante4b3f6862006-10-03 22:21:02 +02001036 This option allows you to set the size of the
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001037 consistent memory pool. This pool of virtual memory
1038 is used to make consistent memory allocations.
1039
1040config CONSISTENT_SIZE
1041 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1042 default "0x00200000" if NOT_COHERENT_CACHE
1043
1044config BOOT_LOAD_BOOL
1045 bool "Set the boot link/load address"
1046 depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
1047 help
1048 This option allows you to set the initial load address of the zImage
1049 or zImage.initrd file. This can be useful if you are on a board
1050 which has a small amount of memory.
1051
1052 Say N here unless you know what you are doing.
1053
1054config BOOT_LOAD
1055 hex "Link/load address for booting" if BOOT_LOAD_BOOL
1056 default "0x00400000" if 40x || 8xx || 8260
1057 default "0x01000000" if 44x
1058 default "0x00800000"
1059
1060config PIN_TLB
1061 bool "Pinned Kernel TLBs (860 ONLY)"
1062 depends on ADVANCED_OPTIONS && 8xx
1063endmenu
1064
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001065if PPC64
1066config KERNEL_START
1067 hex
Stephen Rothwelleeb2d212005-09-30 17:24:15 +10001068 default "0xc000000000000000"
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001069endif
1070
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001071source "net/Kconfig"
1072
1073source "drivers/Kconfig"
1074
1075source "fs/Kconfig"
1076
1077# XXX source "arch/ppc/8xx_io/Kconfig"
1078
1079# XXX source "arch/ppc/8260_io/Kconfig"
1080
Li Yang98658532006-10-03 23:10:46 -05001081source "arch/powerpc/sysdev/qe_lib/Kconfig"
1082
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001083source "arch/powerpc/platforms/iseries/Kconfig"
1084
1085source "lib/Kconfig"
1086
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -08001087menu "Instrumentation Support"
1088 depends on EXPERIMENTAL
1089
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001090source "arch/powerpc/oprofile/Kconfig"
1091
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -08001092config KPROBES
1093 bool "Kprobes (EXPERIMENTAL)"
Ananth N Mavinakayanahalli3a872d82006-10-02 02:17:30 -07001094 depends on PPC64 && KALLSYMS && EXPERIMENTAL && MODULES
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -08001095 help
1096 Kprobes allows you to trap at almost any kernel address and
1097 execute a callback function. register_kprobe() establishes
1098 a probepoint and specifies the callback. Kprobes is useful
1099 for kernel debugging, non-intrusive instrumentation and testing.
1100 If in doubt, say "N".
1101endmenu
1102
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001103source "arch/powerpc/Kconfig.debug"
1104
1105source "security/Kconfig"
1106
1107config KEYS_COMPAT
1108 bool
1109 depends on COMPAT && KEYS
1110 default y
1111
1112source "crypto/Kconfig"